diff --git a/lib/util/crc32c.c b/lib/util/crc32c.c
index babb3c730..9c2196085 100644
--- a/lib/util/crc32c.c
+++ b/lib/util/crc32c.c
@@ -33,22 +33,16 @@
 
 #include "spdk/crc32.h"
 
-#if defined(__aarch64__) || defined(__AARCH64__)
-#ifdef __ARM_FEATURE_CRC32
-#define SPDK_HAVE_ARM_CRC
-#include <arm_acle.h>
-#endif
-#endif
-
-#if defined(__x86_64__) && defined(__SSE4_2__)
 #ifdef SPDK_CONFIG_ISAL
 #define SPDK_HAVE_ISAL
 #include <isa-l/include/crc.h>
-#else
+#elif defined(__aarch64__) && defined(__ARM_FEATURE_CRC32)
+#define SPDK_HAVE_ARM_CRC
+#include <arm_acle.h>
+#elif defined(__x86_64__) && defined(__SSE4_2__)
 #define SPDK_HAVE_SSE4_2
 #include <x86intrin.h>
 #endif
-#endif
 
 #ifdef SPDK_HAVE_ISAL